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Historical MysteryPart 2 of 4

The Shadow of Mallabhum

Part II: The Vault of the Seven Tanks

2026-10-27 · ABikram Mondal

The Shadow of Mallabhum
Wikimedia Commons (CC BY-SA 4.0)

The night wind over the Lalbandh tasted of scorched straw and wet silt. Aniruddha crouched beneath the shadow of a basalt cornice on the northern wall of the Madan Mohan temple, his bare feet pressed against the cool lime mortar. Below him, two horsemen in quilted Deccan jerkins rode at an easy trot along the outer embankment. Their mounts were small, wiry Deccani mares, unshod for stealth on gravel, the brass rings of their bridles muffled with strips of sheepskin.

Bhaskar Pandit’s scouts were already inside the outer pargana. They had not burned the granaries at Joypur, nor had they fired upon the cowherds at dusk. That was the most terrifying sign of all. The Bargis were renowned for fire and terror, but these horsemen were moving like cartographers. They were checking coordinates, measuring the drop between the dykes, seeking the underground conduit where the seasonal spill of the seven great tanks converged.


Aniruddha reached into the inner fold of his silk sash, his fingertips grazing the cold brass leaves of the cipher. The tongue of the stone bull drinks. In the temple courtyards of Mallabhum, there was only one monolithic bull of grey hornblende: the Nandi of the abandoned Ekteswar shrine, half-buried under five centuries of river silt near the dry bed of the Dwarakeswar.

He did not take the stone stairway. To descend into the sanctum courtyard in daylight was to risk being seen by the Raja’s nervous matchlock-men; to do so at midnight was to walk directly into the traitor’s crosshairs. Aniruddha stepped over the edge of the parapet, slipping through a vertical drainage slit no wider than a man’s torso. His forearm sheath scraped softly against the brickwork, the concealed iron bodkin resting rigid against his wrist tendon.

The air inside the lower crypt was heavy with bat guano and the thick, damp smell of stagnant ground-water. A single mustard-oil lamp burned on a low stone ledge beside an open archway. On the floor lay an elderly man in the white cotton robes of a royal astrologer, his spectacles shattered upon the flags, his throat pierced by a single clean puncture that had not even stained his collar.

Beside the corpse knelt a tall Brahmin with shaved temples and the ochre tilak of the Banaras school. In his right hand, he held a set of bronze compasses; in his left, a parchment covered in freshly drawn trigonometric notations.

“You are late, brother,” the man said without looking up, his voice cultured, resonant, and entirely without fear. “I expected the messenger an hour before the third watch. Did you kill him yourself, or did the fever finish what my men started at Mejia?”


Aniruddha remained motionless in the shadow of the stone archway, his breath suppressed to a shallow flutter. “He lived long enough to deliver the cipher, Pandit Vidyadhar.”

The pandit turned slowly, his compasses clicking shut between long, manicured fingers. His eyes were pale grey—the colour of unpolished mica—and completely devoid of malice. That was the mark of a true scholar gone rogue: he did not serve the Maratha general out of hatred or greed, but out of a perverse, clinical curiosity.

“You think this is treason,” Vidyadhar said quietly, gesturing toward the dead astrologer. “Poor old Harinath. He spent forty years measuring the moon’s nodal cycle with water-bowls, yet he could not grasp the genius of what he was guarding. King Shashanka did not build this hydraulic clock to defend cows or mud huts. The Kaala-Yantra is a mechanical cosmos. It calculates the precession of the equinoxes through the differential weight of water escaping thirty-two chambers. It is the greatest scientific achievement of the Pala empire, buried beneath cow dung and devotional songs by Vaishnava kings who forgot what stone was made for.”

Vidyadhar took a step forward, raising a silver whistle to his lips. “Surrender the brass leaves, boy. The general will give me the excavation rights, and you will be permitted to copy the astronomical treatises in our camp at Katwa.”

Aniruddha did not speak. His left middle finger contracted slightly inward. The spring mechanism inside the ox-hide sleeve gave a quiet, metallic snap—sharp as the click of a beetle’s wing in dry grass.

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